package com.lhd.app.bean;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.util.Map;


@Data
@AllArgsConstructor
@NoArgsConstructor
// 用户行为数据模型
public class UserBehavior {
    private String userId;
    private String itemId;
    private String behaviorType; // browse, cart, favorite, buy
    private String category1;
    private String category2;
    private String category3;
    private Long timestamp;
    private Map<String, String> itemAttributes;
}